ASME/ANSI B16.47 Flanges

Our company provides ASME/ANSI B16.47 Flanges.

Manufacturing all kinds of Flanges to standards ASME/ANSI. Size from 26” – 60”, Many years of production history, high quality, and factory price.


ASME B16.47 standard covers in rating Classes 75, 150, 300, 400, 600, and 900.

  • ASME B16.47 Flange  Class 150-900 Series A – 26″to 60″
  • ASME B16.47 Flange  Class 75-900 Series B – 26″to 60″

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ASME B16.47 Flanges Dimensions and Weights

ASME/ANSI B16.47 Flange Series A Weld Neck Flange

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ASME/ANSI B16.47 Flange Series B Weld Neck Flange

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ASME/ANSI B16.47 Flange Series A Blind Flanges

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ASME/ANSI B16.47 Flange Series B Blind Flanges

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ASME/ANSI B16.47 Flanges

ASME/ANSI B16.47 is a standard for American flanges that specifies the appearance design, dimensions, pressure, manufacturing standards, and testing requirements for large steel butt welded and blind flanges ranging from 26 inches to 60 inches. The main purpose is to improve the versatility of flanges and ensure that flanges manufactured by different flange manufacturers can be used interchangeably in pipelines.
The ASME/ANSI B16.47 flange standard is further divided into two series: ASME/ANSI B16.47 Series A and ASME/ANSI B16.47 Series B.
ASME/ANSI B16.47 Series A is mainly used in high-pressure environments such as oil and gas, while compared to ASME/ANSI B16.47 Series B, it is commonly used in low-pressure environments such as water treatment.

Specification/FeatureDescription
StandardASME/ANSI B16.47 Flanges, including both Series A and Series B sub-standards.
TypeWeld Neck Flanges, Blind flanges.
Pressure RatingClass 75, Class 150, Class 300, Class 600, Class 900.
Size Range26″-60″
Materialcarbon steel, stainless steel, alloy steel, etc.
Facing TypeRaised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Tongue and Groove (T&G), Male and Female (M&F)
Seal TypeASME/ANSI B16.47 Flanges commonly use gaskets or O-rings for sealing.
Performance CharacteristicsKnown for excellent pressure-bearing capacity and sealing performance, suitable for high-pressure, high-temperature, critical applications, etc.
ClassificationASME/ANSI B16.47 Series A, ASME/ANSI B16.47 Series B
Application AreasASME/ANSI B16.47 Flanges find widespread use in industries such as petroleum, natural gas, chemical, nuclear, maritime, etc.
ASME/ANSI B16.47 Flanges Main Features and Specifications Table

ASME/ANSI B16.47 is a universal flange standard developed by the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI), which specifies large-diameter steel pipe flanges with sizes ranging from NPS 26 to NPS 60 and provides dimensions and ratings in metric and imperial units.

ASME B16 47 Series A and Series B are suitable for different pressure pipelines. ASME B16 47 Series A is mostly suitable for high-pressure environments, while ASME B16 47 Series B is suitable for low-pressure environments.

ASME/ANSI B16.47 flanges are mainly of large diameter and typically range in size from 26 inches to 60 inches, with pressure ratings ranging from Class 75-900.

The “B16” on the flange generally refers to the fact that the flange is an ASME/ANSI B16 series standard flange. Therefore, when we see the “B16” mark on the flange, it indicates that the flange complies with the ASME/ANSI B16 standard and can be suitable for pipelines specified in that standard.

Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Tongue and Groove (T&G), Male and Female (M&F), etc.

ASME/ANSI B16.47 flanges are commonly used in industrial pipelines with larger diameters, especially in pipeline systems that require handling high-pressure, high-temperature, and corrosive media.